Those of you who browse this sub-forum must be used to jumping between operating systems, and like me, probably value the freedom to do this. I expect you have strategies for making the transitions as smooth as possible. So I wanted to ask, what apps/services do you recommend for facilitating easily jumping between operating systems (both mobile and desktop) without too much disruption to access to your content and services? For me, the following play an important role: *File syncing: Dropbox. But could just as easily be skydrive. *Passwords: 1Password *Email/calender/contacts: Microsoft Exchange/Google *Office suite: Microsoft office (surely will be on iPad and Android tablets within a year) *Video calling: Skype *Books: Kindle *Music subscription service: Spotify *TV/Movie subscription service: Netflix *Notes: Evernote *Photos: At the moment Google+ photos (only windows phone / windows RT loses out), but probably will move to Flickr to open access from Windows phone/RT. Any others you rely on or do you think there are better options to the ones I have chosen? (either in the categories I have highlighted or other categories important to you). I'm hoping there might be some gems out there I have not yet considered. Note: Personally, I'm not just interested in skipping between iOS and Android. I'm interested in skipping between the full gamut of Windows, Mac, iOS, Android & Windows Phone, and this is reflected by the absence of some iOS-supported google services in my list which are just not supported on Windows. A couple of the things I feel locked into Apple on (particularly when considering just mobile OSs) are: * TV/Movie purchase/rental service: I still use iTunes for this. Is there a good cross-mobile-platform option for this that has the benefit of downloading rentals and purchases for offline playback, like iTunes has? Is this a US-only service? * iTunes U. Is there anything equivalent that is cross-mobile-platform and even comes close?